ci: re-use venv

[nepalevov]

CI speed-up:

• skip poetry env use when running in CI environment - no need to recreate the venv we already prepared in workflow script (python_prepare action)

For local execution everything stays the same

[ai-dial-actions]

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Unknown release type "ci" found in pull request title "ci: re-use venv".

Available types:
 - fix
 - hotfix
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